Marshalltown
Description
Source: Wikipédia
The Marshalltown Formation is a Late Cretaceous (Campanian)-aged geologic formation in New Jersey and Delaware, US. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation. It contains the most extensive Campanian-aged dinosaur fauna from New Jersey and Delaware.
The famous Ellisdale Fossil Site, a konzentrat-lagerstätten which contains one of the most diverse Cretaceous vertebrate assemblages (likely rapidly buried in a massive flood event) known from eastern North America/former Appalachia, is an exposure of this formation.
The Marshalltown Formation stretches across southern New Jersey to northern Delaware, and is largely composed of marine sediments deposited off the eastern shore of Appalachia, although the Ellisdale site represents a fluvio-deltaic or tidal-estuarine environment reminiscent of the modern Albemarle Sound, and thus has more of a terrestrial influence.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 4
Ellisdale Site : New Jersey - Monmouth 1580 1691 10522 10535 32617 54671 66642 85047 along Crosswicks Creek- Dryptosaurus
- Theropoda
- Hadrosaurus
- Hadrosauridae identifié comme Hypsibema crassicauda
- Ornithopoda
- Ornithomimosauria identifié comme Coelosaurus sp.
- Hadrosauridae
- Edmontosaurus
- Tyrannosauroidea
- Dromaeosauridae
- Ornithomimosauria
- Dryptosaurus
- Dromaeosauridae
- Spoil piles, St. Georges (Marshalltown Formation) : Delaware - ? 776 39861 54671 "north bank [of canal]... one-half mile west of the town of St. Georges"; material was dredged from an unstated stretch of the canal
- Ornithomimosauria identifié comme Ornithomimus antiquus
- Cambridge Crossing Executive Park (Marshalltown Fm.) : New Jersey - Burlington 54671 Cambridge Crossing Executive Park, Mt. Laurel
- Chesapeake & Delaware Canal (Marshalltown Fm.) : Delaware - New Castle 54671 61518 along Chesapeake & Delaware Canal
Publication(s)
La base comprend 11 publication(s).
Source: The Paleobiology Database
- ↑1 2 W. B. Gallagher, D. C. Parris, and E. E. Spamer. 1986. Paleontology, biostratigraphy, and depositional environments of the Cretaceous-Tertiary transition in the New Jersey coastal plain. The Mosasaur 3:1-35
- ↑1 B. S. Grandstaff, D. C. Parris, and R. K. Denton, Jr, W. B. Gallagher. 1992. Alphadon (Marsupialia) and Multituberculata (Allotheria) in the Cretaceous of eastern North America. Journal of Vertebrate Paleontology 12(2):217-222 (https://doi.org/10.1080/02724634.1992.10011450)
- ↑1 R. K. Denton, Jr. and W. Gallagher. 1989. Dinosaurs of the Ellisdale site, Late Cretaceous (Campanian) of New Jersey. Journal of Vertebrate Paleontology 9(3, suppl.):18A
- ↑1 R. K. Denton, Jr. 1990. A revision of the theropod Dryptosaurus (Laelaps) aquilunguis (Cope 1869). Journal of Vertebrate Paleontology 10(3, suppl.):20A
- ↑1 J. I. Kirkland and S. K. Madsen. 2007. The Lower Cretaceous Cedar Mountain Formation, Eastern Utah: the view up an always interesting learning curve. Utah Geological Association Publication 35
- ↑1 2 3 4 5 W. B. Gallagher. 1993. The Cretaceous/Tertiary mass extinction event in the North Atlantic coastal plain. The Mosasaur 5:75-154
- ↑1 C. D. Brownstein. 2018. The distinctive theropod assemblage of the Ellisdale site of New Jersey and its implications for North American dinosaur ecology and evolution during the Cretaceous. Journal of Paleontology 92(6):1115-1129 (https://doi.org/10.1017/jpa.2018.42)
- ↑1 D. B. Weishampel and L. Young. 1996. Dinosaurs of the East Coast (https://doi.org/10.1111/j.1502-3931.1996.tb01654.x)
- ↑1 2 E. M. Lauginiger. 1984. An Upper Campanian vertebrate fauna from the Chesapeake and Delaware Canal, Delaware. The Mosasaur 2:141-149
- ↑1 W. B. Gallagher. 1984. Paleoecology of the Delaware Valley region. Part II: Cretaceous to Quartenary. The Mosasaur 2:9-43
- ↑1 2 D. B. Weishampel and J. B. Weishampel. 1983. Annotated localities of ornithopod dinosaurs: implications to Mesozoic paleobiogeography. The Mosasaur 1:43-87